US2437095A

US2437095A - Wooden deck covering on ships

Info

Publication number: US2437095A
Application number: US512227A
Authority: US
Inventors: Kahr Gustaf
Original assignee: Individual
Current assignee: Individual
Priority date: 1943-09-29
Filing date: 1943-11-29
Publication date: 1948-03-02
Anticipated expiration: 1965-03-02

Description

G. KHR

WOODEN DECK COVERING ON SHIPS March 2, 1948.

Filed NOV. 29, 1945 Patented Mar. 2, 1948 l Gustaf Khr, Stockholm, Sweden Application November 29, 1943, Serial No. 512,227; In Sweden September 29, 1943 4 Claims.

The present invention refers to a wooden deck .covering on ships which consists of comparativa ly long and narrow boards xed to transversally extending beams supporting the deck covering.

yIn wooden deck coverings of this kind previously known the grooves between the individual boards are lled with libre material and some plastic material so as toV make the grooves elastic. In a wooden deck covering according to the present invention most 'of the grooves lying between the long and narrow boa-rds are filled with glue and thus rigid whereas only a few of the grooves are lled with fibre material and thus elastic. These few elastic groovesV of the deck covering according to the invention are sulcient for protectingthe deck covering from any deformations which may occur during its use owing to bending actions in the supporting beams. The adaptation of the deck covering to the support is effected according to the invention my means of a special method of production of the deck covering which method is described hereinafter.

According to this method of production, the deck covering is built up with the individual boards in the very place where it is to be used, the boards. being exposed to lateral pressure when glued together and the addition of each further board taking place in a new stage of the working process. At iirst only two boards are fixed on the transversally extending beams supporting the deck covering and are inserted between two angle irons which are also xed tov said beams. Then, during the gluing together of the boards, a lateral pressure is exerted upon these boards by means of the two angle irons and by a wedge inserted between one of the angle irons and. the board adjacent to this angle iron. The successive addition of further boards takes place in such a way that one of the angle irons is displaced for each board to be added, by thebreadth of that board, whereupon the new board is glued to the last board in the same way as was the case with the first boards. Thus the wooden deck covering is adapted to the support, which would not be possible if a ready-made deck covering having most of its grooves between the individual boards lled with glue and thus rigid was used.

Further details of the invention are shown in the accompanying drawing which shows two embodiments of the invention. Figure 1 is a cross section of a deck covering according to one form of the invention. Figure 2, too, is a cross section of the same deck covering but also of the means used for its building up. Figure 3 shows schematically' another embodiment or the deck covering according-to the invention.

Each of the individual' boards is, asis shown in Figure 1, composed of! live layers. Theupper wearing layer Iv 'consists of a harder and generally more valuable kind of woodl than the core layer 2. Besides these two layers there is a comparatively thin lower covering: layers 3'- lying under the core layer 2-. Between the upper'wear; ing layer I- and' the core layer 2l there is a veneer layer 4 and between the core layerl 2 and the lower covering layer 3 there is a veneer layer 5; The veneer layers 41 and 5-have1a trans'- versal run of grain. The upperwearing layer I consists of lengths 8v and the core layer 2 of lengths I0. The lengths 3 of`r the layer I-I and the lengths IUI off the. layer 2 are mutuallyA glued together. Similarly, the individual layers' of the .boards are mutually glued' together. The grooves between the individual boards' are numbered IVI and I3; The two grooves- I-I= on the right and on the left of; Figure 1 areflledwith glue andV thus rigid; while the groove Ir3'l` inthe middler of Figure 1 is filled with fibre material and some plastic material and' thus elastic;

The grooves II; lled with glue have their upper parts, I 2"enlargedV and llediwith someplastic jointing material; the oblique wallsof `these upper parts I2 being preferably ribbed. The grooves I3 which are enlarged; more gradually than the grooves, I I are also lled in their upper parts with a plastic jointingmaterial protecting the .grooves frominuence of moisture as is also the case with the, grooves II with respect to the plastic jointing material in the. upper parts l2.

At the lower ends of the grooves Il and I-3 the adjoining parts. or" the lower covering* layers are rounded.l offv soY that thereis formed, a. pat.-

tern at the ceilings of theroomslyingunder the deck coveringl The deck covering is xed to the transversally extending beams 20 supporting the deck covering and generally consisting of iron by means of the bolts I4, the washers If5 and the nuts I 6. The xing points of the individual boards lie about in their midst in transversal direction. At the iixing points of the individual boards cylindrical incisions are made in the wearing layers which incisions are afterwards closed by the properly shaped Stoppers 9. These Stoppers are of such depths that there remain empty spaces I'I admitting the washers I5 and the nuts I6. The bolts I4 are so long that they penetrate through the lower covering layer 3, the core layer `2, the

two veneer layers 4 and l5 and the lower part of the wearing layer I.

The method of production of the new deck covering on ships is illustrated in Figure 2. The boards which are to be mutually glued together are inserted between the angle irons I8. The

' deck covering is built up in the very place where it is to be used in such a way that first only two boards are inserted between the angle irons I8 which are fixed to the beams 20 by means of the screws I9. By the aid of the angle irons I8 andV a wedge 2| inserted between one of the angle irons I8 and the adjacent board a lateral pressure is then exerted upon the two boards while they are glued together. Before the addition of each new board one of the angle irons I8 is displaced for each board to be added by the breadth of that board. Then the new board is glued to the other boards under lateral pressure exerted by the angle irons I8 and the wedge 2I. The breadths of the angleirons i. e. the distances between the screws I9 and the bending abutting side of the langle irons are preferably equal .to half the breadths of the boards so that the same holes in the beams 2] can be used for xing the boards and for inserting the angle irons.

In the embodiment of the invention shown in Figures 1 and 2 the individual boards are of equal breadths. Figure 3 shows an embodiment of the invention with boards of unequal breadths. In the example shown the boards B are twice as broad as the boards A. The boards B lie each adjacent to one of the grooves I3 which are filled with iibre material and thus elastic. In order to obtaingregular patterns the -boards B having the double breadths are provided with incisions C in the midst of their upper and lower sides.

The following dimensions of the single parts of the deck covering according to the invention may serve as an example, but the invention is not restricted to these dimensions:

The boards have a length of several meters preferably corresponding to the length of the room lying under .the covering or the section of the deck in question. The breadth of the boards in Figures 1 and 2 is 12 cm. The broader boards in Figure Shave a breadth of 24 cm. and the narrower boards have a breadth of 12 cm. The depth of the upper Wearing layer is 11/2 to 2 cm. The depth `of the core layer is 4 cin., the depth of the lower covering layer is 0.5 cm. and the depth of the two veneer layers is 0.1 to 0.2 cm,

In comparison with previously known deck coverings on ships the' deck covering according to the invention excels in greater simplicity and greater cheapness of its production.

I claim:

1. In a ship, a floor structure comprising a series of supporting beams arranged transversally of the ship and a wooden deck covering cromposed of comparatively long and narrow boards with grooves between them and fixed to the upper surfaces of the beams, a lling of glue in the majority of the grooves between the long and narrow boards and a filling of brous material having an elastic action in the remaining grooves between the boards, the number of which grooves is only a small fraction .of the grooves lled with glue.

2. Wooden deck covering on ships according to claim 1, the individual boards being composed of several layers, namely, an upper wearing layer consisting of comparatively hard wood, a core layer, a lower covering layer and two veneer layers having a run of grain transversal to the longitudinal extension of the boards and one of which lies between the wearing layer and the core layer, and the other of which lies between the core layer and the lower covering layer.

3. Wooden deck covering on ships according to claim 1, the individual boards being composed of several layers, namely, an upper wearing layer consisting of comparatively hard wood and composed of a plurality of lengths substantially parallel to one another, a core layer composed of a plurality of lengths substantially parallel to one another, a lower covering layer and two veneer` layers having the run of grain transversal to the longitudinal extension of the boards. and one of which lies between the wearing layer and the core layer andthe other of which lies between the core layer and the lower covering layer.

4. A wooden deck covering on ships in accordance with claim 1Y in which some of the boards are broader than the other boards and each of the broader boards lying adjacent to one of the grooves filled with fibrous material and thus elastic.

GUSTAF KHR.

REFERENCES CITED The following references are of record in the iile of this patent:

UNITED STATES PATENTS Great Britain Apr. 8, 1935